ScanifyAIconvert · Free browser tool
Optimise PDF (Lossless) Online
Recompress PDF streams and object structure without resampling images or removing page text. File-size reduction is not guaranteed. Free local processing.
About this tool
Recompress PDF streams and object structure without resampling images or removing page text. File-size reduction is not guaranteed. Free local processing.
Like every ScanifyAI tool, it runs inside your browser: the file you choose is processed on your own device and is never uploaded to a server. There is no account to create and no watermark on the result.
How to use Optimise PDF (Lossless)
- Choose a PDF (up to 50 MB).
- Adjust the options and check the preview.
- Press “Optimise PDF” and download the result.
Tips for the best result
- Keep your original file until you have checked the result.
- Large files depend on your device’s memory; close other tabs if a big file is slow.
Frequently asked questions
Is my file uploaded?
No. This tool processes your file in your browser, on your device. Nothing is sent to our servers.
Is it free?
Yes. There is no account, no trial and no watermark.
Supported file types
Choose a file matching the formats accepted by the tool:
Output options are shown in the tool workspace before you save.
Use it with related tools
Your privacy
Your file is processed locally in your browser and is never uploaded to our servers. Read the Privacy Policy for details, or contact us if you need help.